6 SNG $3 + .30 End 6th 9 hands Step 1 (Turbo)

Very poorly played all around. Over betting early hands. Maybe too passive on hand 7. I had Qh 2h as BB. UTG+1 and SB limped in and I checked. Flop Qs 4s 2s. I hit two pair but there could be a flush out there. SB bet 80 into the 120 pot, I called, and UTG+1 folded. I probably should have raised the SB's bet to see where they might have stood in terms of a flush. Turn Ad. SB bet 120 into the 280 pot and I just called again. River 6s. Nuts. If SB was on a flush draw they likely have it now. SB bets 160 into the 520 pot and I call. SB shows, not a flush but Qd 6c, having hit a bigger two pair on the River. Grrrrrr. If I had bet as if I had the flush earlier they likely would have folded. My passive play hurt me here!